/Engine/Source/Runtime/PacketHandlers/PacketHandler/Public/PacketHandler.h
Adds aHandlerComponentto the pipeline, prior to initialization (none can be added after initialization)
void AddHandler ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [HandlerComponent](API\Runtime\PacketHandler\HandlerComponent) > & NewHandler, bool bDeferInitialize )